Ball valve inner cavity anti-corrosion coating production device and process

Abstract

The invention relates to the technical field of ball valve detection, and particularly discloses a ball valve inner cavity anti-corrosion coating production device and process, the ball valve inner cavity anti-corrosion coating production device comprises a supporting platform, a driving assembly and a feeding assembly are arranged at the top of the supporting platform, and positioning assemblies are symmetrically arranged at the tops of the driving assembly and the feeding assembly; the driving assembly comprises limiting seats symmetrically and fixedly connected to the upper surface of the supporting platform, movable blocks are slidably connected to the inner sides of the limiting seats, the positioning assembly comprises positioning seats fixedly connected to the tops of the movable blocks, and mounting seats are fixedly connected to the outer sides of the positioning seats; a second motor drives a two-way lead screw and drives positioning seats at the two ends to move oppositely to clamp the ball valve, meanwhile, mounting seats moving oppositely drive an internal opening mechanism, and a spraying seat and a detection seat are opened reversely and attached to an inner cavity of the ball valve, so that uniform spraying of inner cavity paint and real-time detection of spraying quality are conveniently achieved, the detection time is shortened, and meanwhile the detection efficiency is improved. And the inner cavity coating can be repaired in time, and the repairing difficulty is reduced.

Description

Technical Field

[0001] The invention relates to the technical field of ball valve detection, and in particular to a device and process for producing anti-corrosion coating for the inner cavity of a ball valve. Background Art

[0002] In actual working conditions, the media that the ball valve contacts, such as petroleum, chemical raw materials, water, acid and alkali solutions, are corrosive and easily react chemically with the metal surface, causing corrosion and thus affecting the sealing, smoothness and service life of the ball valve, and even leading to safety accidents. In addition, impurities such as solid particles in the medium will also cause surface wear and affect the production life of the ball valve. For this reason, the inner cavity of the ball valve needs to be sprayed with anti-corrosion paint during production and use to achieve the formation of the paint coating and increase the service life of the ball valve.

[0003] During the production process of anti-corrosion coating for the inner cavity of ball valves, after the coating is fully stirred evenly by the mixing system, the coating is evenly sprayed on the inner cavity surface of the ball valve at a constant and appropriate pressure with the help of a pressure regulating device. After the spraying operation is completed, the coating uniformity needs to be tested. At this time, the ball valve needs to be removed from the production device so that a comprehensive test of its inner cavity coating can be carried out.

[0004] However, during the disassembly and inspection process, partial solidification of the paint often occurs. If the test results show that the coating uniformity does not meet the standards in this case, the subsequent rework process will be difficult to effectively handle through conventional means due to the change in the characteristics of the partially solidified paint, resulting in increased difficulty in repainting or repair operations, seriously affecting the uniformity of the paint coating, and increasing production costs and production cycles.

[0005] Therefore, it is necessary to provide a ball valve inner cavity anti-corrosion coating production device and process to solve the above problems. Summary of the invention

[0006] The main purpose of the present invention is to provide a device and process for producing an anti-corrosion coating for the inner cavity of a ball valve, which can effectively solve the problems in the background technology.

[0007] To achieve the above object, the technical solution adopted by the present invention is: A device for producing anti-corrosion coating for inner cavity of ball valve comprises a supporting platform, a driving assembly and a feeding assembly are arranged on the top of the supporting platform, a positioning assembly is symmetrically arranged on the top of the driving assembly and the feeding assembly, the driving assembly comprises a limiting seat symmetrically fixedly connected to the upper surface of the supporting platform, a movable block is slidably connected to the inner side of the limiting seat, the positioning assembly comprises a positioning seat fixedly connected to the top of the movable block, a mounting seat is fixedly connected to the outer side of the positioning seat, a driving mechanism is symmetrically arranged on the bottom of the positioning seat, a positioning mechanism is symmetrically arranged on the top of the positioning seat, an opening mechanism is arranged inside the mounting seat, a spraying seat and a detection seat are slidably connected to the mounting seat through the opening mechanism, a spraying head is arranged on the outer side of the spraying seat, a detection head is arranged on the outer side of the detection seat, and the spraying seat and the detection seat both penetrate and are slidably connected to the interior of the positioning seat; The opening mechanism includes a movable rod slidably connected to the inner side of the mounting seat, a fixed block is fixedly connected to the inside of the driving assembly, a spring is fixedly connected between the movable rod and the fixed block, two push rods are rotatably connected between the movable rod and the spray seat, and another two push rods are rotatably connected between the movable rod and the detection seat.

[0008] As a further improvement of the above scheme, the drive assembly also includes a support seat symmetrically fixedly connected to the top of the support platform, and the two support seats are internally rotatably connected with a bidirectional screw rod, and a second motor is fixedly installed on the outer side of one of the support seats, and the bidirectional screw rod is fixedly connected to the output end of the second motor through a coupling, and a spiral pair transmission is formed between the movable block and the bidirectional screw rod, and a power mechanism is arranged inside one of the support seats.

[0009] As a further improvement of the above scheme, the power mechanism includes a connecting shaft rotatably connected to the inside of the support seat, a worm is symmetrically fixedly connected to the outer side of the connecting shaft, a driving shaft is symmetrically rotatably connected between the two support seats, one end of the driving shaft is located inside the support seat and is fixedly connected to a worm wheel, and the worm and the worm wheel are meshed with each other.

[0010] As a further improvement of the above solution, a motor 1 is fixedly mounted on the outer side of the support seat, and the connecting shaft is fixedly connected to the output end of the motor 1 through a coupling.

[0011] As a further improvement of the above scheme, the loading assembly includes two groups of four brackets fixedly connected to the outside of the support platform, the tops of the two brackets in each group are rotatably connected to the installation shaft, and a conveyor belt is symmetrically arranged between the two installation shafts.

[0012] As a further improvement of the above solution, the positioning mechanism includes a mounting sleeve 1 fixedly connected to the inside of the positioning seat, the inside of the mounting sleeve 1 is rotatably connected to a fixed shaft 1, and the outside of the fixed shaft 1 is fixedly connected to a positioning wheel.

[0013] As a further improvement of the above scheme, the driving mechanism includes an installation sleeve 2 fixedly connected to the inside of the positioning seat, the interior of the installation sleeve 2 is rotatably connected to a fixed shaft 2, the outer side of the fixed shaft 2 is fixedly connected to a driving wheel, and the fixed shaft 2 and the driving wheel are both slidably connected to the outer side of the driving shaft.

[0014] The production process of anti-corrosion coating for the inner cavity of a ball valve includes the following steps: Step 1: Start the conveyor belt to transport the ball valve to be processed to the working area; Step 2: Start the drive assembly, and the second motor drives the bidirectional screw to rotate in the support seat, and the movable block slides linearly in the limit seat through the screw pair transmission, driving the positioning seat to move; Step 3: The movement of the positioning seat drives the driving mechanism to move, and the ball valve is lifted by the driving wheel, so that it moves upward and is clamped by the positioning wheels and the driving wheels at both ends; Step 4: The movement of the positioning seat drives the movable rod to slide and compress the spring, and the spray seat and the detection seat are caused to slide and open in the opposite direction through the push rod, so that the spray head and the detection head fit the inner cavity of the ball valve; Step 5: Start the motor 1, so that it drives the driving shaft to rotate through the coupling, and the driving shaft drives the driving wheel of the driving mechanism to rotate, and cooperates with the positioning wheel of the positioning mechanism to drive the ball valve to rotate around the axis; Step 6: When the ball valve rotates, the spray head of the spray seat sprays paint, and the detection head of the detection seat detects in real time.

[0015] Compared with the prior art, the present invention has the following beneficial effects: 1. Motor 2 drives the bidirectional screw rod, driving the positioning seats at both ends to move toward each other to clamp the ball valve. At the same time, the mounting seats moving toward each other drive the internal opening mechanism, so that the spray seat and the detection seat open in the opposite direction and fit the inner cavity of the ball valve, so as to realize the uniform spraying of the inner cavity paint and the real-time detection of the spraying quality, which can reduce the detection time, and can also repair the inner cavity coating in time and reduce the difficulty of repair.

[0016] 2. The movement of the positioning seat drives the positioning mechanism and the driving mechanism to move synchronously. The driving mechanism moves, and the ball valve is lifted by the driving wheel, so that it moves upward and is clamped by the positioning wheels and driving wheels at both ends. The power mechanism drives the bottom driving wheel to rotate, so that the ball valve rotates, and cooperates with the spray seat and the detection seat to reduce the difficulty of spraying and detection. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following briefly introduces the drawings required for describing the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0018] Figure 1 It is a schematic diagram of the overall structure of the present invention; Figure 2 It is a schematic diagram of the top structure of the support platform of the present invention; Figure 3 It is a schematic cross-sectional structure diagram of the positioning assembly of the present invention; Figure 4 It is a schematic diagram of the structure of the driving assembly and the feeding assembly of the present invention; Figure 5 It is a structural schematic diagram of the power mechanism of the present invention; Figure 6 It is a partial structural schematic diagram of the positioning assembly of the present invention; Figure 7 It is a structural schematic diagram of the positioning mechanism and the driving mechanism of the present invention; Figure 8 It is a schematic diagram of the internal structure of the positioning seat of the present invention; Fig. 9 It is a structural schematic diagram of the opening mechanism of the present invention.

[0019] In the figure: 1. support platform; 2. drive assembly; 21. support seat; 22. limit seat; 23. power mechanism; 231. drive shaft; 232. motor one; 233. connecting shaft; 234. worm; 235. worm wheel; 24. movable block; 25. bidirectional screw; 26. motor two; 3. feeding assembly; 31. bracket; 32. mounting shaft; 33. conveyor belt; 4. positioning assembly; 41. positioning seat; 42. mounting seat; 43. positioning mechanism; 431. positioning wheel; 432. mounting sleeve one; 433. fixed shaft one; 44. drive mechanism; 441. drive wheel; 442. mounting sleeve two; 443. fixed shaft two; 45. spray seat; 46. detection seat; 47. opening mechanism; 471. movable rod; 472. spring; 473. fixed block; 474. push rod. DETAILED DESCRIPTION

[0020] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0021] See also Figures 1 to 9 As shown, the present invention provides an embodiment: A device for producing anti-corrosion coating for inner cavity of ball valve comprises a supporting platform 1, a driving component 2 and a feeding component 3 are arranged on the top of the supporting platform 1, a positioning component 4 is symmetrically arranged on the top of the driving component 2 and the feeding component 3, the driving component 2 comprises a limit seat 22 symmetrically fixedly connected to the upper surface of the supporting platform 1, a movable block 24 is slidably connected to the inner side of the limit seat 22, the positioning component 4 comprises a positioning seat 41 fixedly connected to the top of the movable block 24, a mounting seat 42 is fixedly connected to the outer side of the positioning seat 41, a driving mechanism 44 is symmetrically arranged on the bottom of the positioning seat 41, a positioning mechanism 43 is symmetrically arranged on the top of the positioning seat 41, an opening mechanism 47 is arranged inside the mounting seat 42, a spraying seat 45 and a detection seat 46 are slidably connected to the mounting seat 42 through the opening mechanism 47, a spraying head is arranged on the outer side of the spraying seat 45, a detection head is arranged on the outer side of the detection seat 46, and the spraying seat 45 and the detection seat 46 both penetrate and are slidably connected to the interior of the positioning seat 41; The opening mechanism 47 includes a movable rod 471 slidably connected to the inner side of the mounting seat 42, a fixed block 473 is fixedly connected to the inside of the driving assembly 2, a spring 472 is fixedly connected between the movable rod 471 and the fixed block 473, two push rods 474 are rotatably connected between the movable rod 471 and the spray seat 45, and another two push rods 474 are rotatably connected between the movable rod 471 and the detection seat 46.

[0022] In practical application, the embodiment of the present invention is as follows: Figure 1 , Figure 2 and Figure 4 As shown, the feeding assembly 3 transports the ball valve to be processed to the working area, and the driving assembly 2 is started to start operation, so that the limit seat 22 symmetrically fixed on the upper surface of the supporting platform 1 guides the movable block 24 to slide linearly inside the limit seat 22, and when the movable block 24 moves, the positioning seat 41 fixedly connected thereto moves accordingly; like Figure 2 , Figure 3 and Figure 6 As shown, the driving mechanism 44 at the bottom of the positioning seat 41 and the positioning mechanism 43 at the top work together, the driving mechanism 44 lifts the ball valve, so that the ball valve moves in the vertical direction, and the driving mechanism 44 and the positioning mechanism 43 are firmly clamped, and then the power mechanism 23 drives the ball valve to rotate through the driving mechanism 44, so that the ball valve rotates around its own axis, so that the spraying seat 45 and the detection seat 46 can perform spraying detection; At the same time, Figure 3 , Figure 6 , Figure 7 , Figure 8 and Fig. 9As shown, with the movement of the positioning seat 41, the opening mechanism 47 inside the mounting seat 42 outside the positioning seat 41 comes into play, so that the movable rod 471 slides inside the mounting seat 42. Since a spring 472 is connected between the movable rod 471 and the fixed block 473, the movable rods 471 at both ends will be displaced and compress the spring 472 after contacting each other. Since the movable rod 471 is rotatably connected to the spray seat 45 and the detection seat 46 respectively through two groups of push rods 474, and the spray seat 45 and the detection seat 46 pass through and are slidably connected to the interior of the positioning seat 41, the linear displacement of the movable rod 471 is converted into the reverse linear sliding of the spray seat 45 and the detection seat 46 inside the positioning seat 41 through the push rod 474, so that the two are opened, so that the spray head outside the spray seat 45 and the detection head outside the detection seat 46 are closely fitted to the inner cavity of the ball valve; like Figure 1 and Figure 3 As shown, during the continuous rotation of the ball valve, the spray head of the spray seat 45 evenly sprays the anti-corrosion paint on the inner cavity of the ball valve, and the detection head of the detection seat 46 simultaneously performs real-time detection of the spray quality to ensure the efficiency and quality of the entire spray process.

[0023] like Figure 3 , Figure 4 and Figure 5 As shown, the driving assembly 2 also includes a support seat 21 symmetrically fixedly connected to the top of the support platform 1, and the two support seats 21 are both rotatably connected with a bidirectional screw 25 inside, and a motor 26 is fixedly installed on the outer side of one of the support seats 21, and the bidirectional screw 25 is fixedly connected to the output end of the motor 26 through a coupling, and a spiral pair transmission is formed between the movable block 24 and the bidirectional screw 25, and a power mechanism 23 is arranged inside one of the support seats 21, and the power mechanism 23 includes a connecting shaft 233 rotatably connected to the inside of the support seat 21, and a worm 234 is symmetrically fixedly connected to the outer side of the connecting shaft 233, and a driving shaft 231 is symmetrically rotatably connected between the two support seats 21, and one end of the driving shaft 231 is fixedly connected to a worm gear 235 in the support seat 21, and the worm gear 234 and the worm gear 235 are meshed with each other, and a motor 1 232 is fixedly installed on the outer side of the support seat 21, and the connecting shaft 233 is fixedly connected to the output end of the motor 1 232 through a coupling.

[0024] In actual application of the embodiment of the present invention, the feeding assembly 3 conveys the ball valve to be processed to the working area, and the driving assembly 2 starts to operate at this time. The second motor 26 is fixedly installed on the outside of one of the support seats 21, and its output end is fixedly connected to the bidirectional screw rod 25 through a coupling. When the second motor 26 is started, the bidirectional screw rod 25 is driven to rotate inside the support seat 21. Since a spiral pair transmission is formed between the movable block 24 and the bidirectional screw rod 25, the rotational movement of the bidirectional screw rod 25 is converted into a linear sliding of the movable block 24 on the inner side of the limit seat 22. The symmetrical limit seat 22 guides the movement of the movable block 24 to ensure the stability of the movement of the movable block 24. When the movable block 24 moves, the positioning seat 41 fixedly connected thereto moves accordingly; Under the action of the power mechanism 23, the motor 232 is fixedly installed on the outside of the support seat 21, and its output end is connected to the connecting shaft 233 through a coupling. After the motor 232 is started, the connecting shaft 233 is driven to rotate, and the worm 234 symmetrically fixed on the outside of the connecting shaft 233 rotates accordingly. The worm 234 and the worm wheel 235 engage with each other, driving the driving shaft 231 to rotate. The driving shaft 231 lifts the ball valve through the driving mechanism 44, so that the ball valve moves in the vertical direction, realizing a firm clamping between the driving mechanism 44 and the positioning mechanism 43, so that the driving shaft 231 drives the ball valve to rotate around its own axis through the driving mechanism 44, ensuring that the entire spraying process is completed efficiently and accurately.

[0025] like Figure 1 , Figure 2 , Figure 3 and Figure 4 As shown, the loading assembly 3 includes two groups of four brackets 31 fixedly connected to the outside of the supporting platform 1, and the tops of the two brackets 31 in each group are rotatably connected to the mounting shaft 32, and a conveyor belt 33 is symmetrically arranged between the two mounting shafts 32.

[0026] In actual application of the embodiment of the present invention, two groups of four brackets 31 of the loading assembly 3 are fixedly connected to the outside of the supporting platform 1, and the mounting shaft 32 is rotatably installed through the bracket 31, so that the symmetrically arranged conveyor belt 33 can transport the ball valve to be processed to the working area during operation.

[0027] like Figure 3 and Figure 7 As shown, the positioning mechanism 43 includes a mounting sleeve 432 fixedly connected to the interior of the positioning seat 41, the interior of the mounting sleeve 432 is rotatably connected to a fixed shaft 433, the outer side of the fixed shaft 433 is fixedly connected to a positioning wheel 431, the driving mechanism 44 includes a mounting sleeve 442 fixedly connected to the interior of the positioning seat 41, the interior of the mounting sleeve 442 is rotatably connected to a fixed shaft 443, the outer side of the fixed shaft 443 is fixedly connected to a driving wheel 441, and both the fixed shaft 443 and the driving wheel 441 are slidably connected to the outer side of the driving shaft 231.

[0028] When the embodiment of the present invention is actually applied, the mounting sleeve 1 432 fixedly connected to the inside of the positioning seat 41 provides rotation support for the fixed shaft 1 433, and the fixed shaft 1 433 can rotate flexibly in the mounting sleeve 1 432, and the positioning wheel 431 fixedly connected to its outside rotates synchronously with the fixed shaft 1 433; the mounting sleeve 2 442 fixedly connected to the inside of the positioning seat 41 allows the fixed shaft 2 443 to rotate therein, and the driving wheel 441 fixedly connected to the outside of the fixed shaft 2 443 and the fixed shaft 2 443 itself are both slidably connected to the outside of the driving shaft 231. When the power mechanism 23 is started, the driving shaft 231 rotates, and through the cooperation of the sliding connection, the fixed shaft 2 443 and the driving wheel 441 are driven to rotate synchronously.

[0029] The present invention provides another embodiment: A production process of anti-corrosion coating for the inner cavity of a ball valve is now proposed, comprising the following steps: Step 1: Start the conveyor belt 33 to convey the ball valve to be processed to the working area; Step 2: Start the drive assembly 2, the motor 26 drives the bidirectional screw 25 to rotate in the support seat 21, and the movable block 24 slides linearly in the limit seat 22 through the screw pair transmission, driving the positioning seat 41 to move; Step 3: The positioning seat 41 moves to drive the driving mechanism 44 to move, and the ball valve is lifted by the driving wheel 441, so that it moves upward and is clamped by the positioning wheels 431 and the driving wheels 441 at both ends; Step 4: The positioning seat 41 moves to drive the movable rod 471 to slide and compress the spring 472, and the spray seat 45 and the detection seat 46 slide and open in opposite directions through the push rod 474, so that the spray head and the detection head fit into the inner cavity of the ball valve; Step 5: Start the motor 1 232 to drive the drive shaft 231 to rotate through the coupling, and the drive shaft 231 drives the drive wheel 441 of the drive mechanism 44 to rotate, and cooperates with the positioning wheel 431 of the positioning mechanism 43 to drive the ball valve to rotate around the axis; Step 6: When the ball valve rotates, the spray head of the spray seat 45 sprays the paint, and the detection head of the detection seat 46 detects in real time.

[0030] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, the elements defined by the sentence "including one..." do not exclude the existence of other identical elements in the process, method, article or device including the elements.

[0031] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A device for producing an anti-corrosion coating for the inner cavity of a ball valve, comprising a support platform (1), characterized in that: The top of the support platform (1) is provided with a driving assembly (2) and a feeding assembly (3); the tops of the driving assembly (2) and the feeding assembly (3) are symmetrically provided with positioning assemblies (4); the driving assembly (2) comprises a limiting seat (22) symmetrically fixedly connected to the upper surface of the support platform (1); the inner side of the limiting seat (22) is slidably connected to a movable block (24); the positioning assembly (4) comprises a positioning seat (41) fixedly connected to the top of the movable block (24); the outer side of the positioning seat (41) is fixedly connected to a mounting seat (42); the positioning seat (41) is A driving mechanism (44) is symmetrically arranged at the bottom of the positioning seat (41), a positioning mechanism (43) is symmetrically arranged at the top of the positioning seat (41), an opening mechanism (47) is arranged inside the mounting seat (42), the mounting seat (42) is slidably connected to a spraying seat (45) and a detection seat (46) via the opening mechanism (47), a spraying head is arranged on the outside of the spraying seat (45), a detection head is arranged on the outside of the detection seat (46), and the spraying seat (45) and the detection seat (46) both penetrate and are slidably connected to the inside of the positioning seat (41); The opening mechanism (47) comprises a movable rod (471) slidably connected to the inner side of the mounting seat (42); a fixed block (473) is fixedly connected to the interior of the driving assembly (2); a spring (472) is fixedly connected between the movable rod (471) and the fixed block (473); two push rods (474) are rotatably connected between the movable rod (471) and the spraying seat (45); and another two push rods (474) are rotatably connected between the movable rod (471) and the detection seat (46).

2. The device for producing anti-corrosion coating for inner cavity of ball valve according to claim 1, characterized in that: The driving assembly (2) further comprises a support seat (21) symmetrically fixedly connected to the top of the support platform (1), the two support seats (21) are both rotatably connected with a bidirectional screw rod (25) inside, a second motor (26) is fixedly mounted on the outside of one of the support seats (21), the bidirectional screw rod (25) is fixedly connected to the output end of the second motor (26) via a coupling, a helical pair transmission is formed between the movable block (24) and the bidirectional screw rod (25), and a power mechanism (23) is arranged inside one of the support seats (21).

3. The device for producing anti-corrosion coating for inner cavity of ball valve according to claim 2, characterized in that: The power mechanism (23) comprises a connecting shaft (233) rotatably connected to the inside of the support seat (21); a worm (234) is symmetrically fixedly connected to the outside of the connecting shaft (233); a driving shaft (231) is symmetrically rotatably connected between the two support seats (21); one end of the driving shaft (231) located inside the support seat (21) is fixedly connected to a worm wheel (235); the worm (234) and the worm wheel (235) are meshed with each other.

4. The device for producing anti-corrosion coating for inner cavity of ball valve according to claim 3, characterized in that: A motor 1 (232) is fixedly mounted on the outer side of the support seat (21), and the connecting shaft (233) is fixedly connected to the output end of the motor 1 (232) via a coupling.

5. The device for producing anti-corrosion coating for inner cavity of ball valve according to claim 2, characterized in that: The loading assembly (3) comprises two groups of four brackets (31) fixedly connected to the outside of the support platform (1), the tops of two brackets (31) in each group being rotatably connected to a mounting shaft (32), and a conveyor belt (33) being symmetrically arranged between the two mounting shafts (32).

6. The device for producing anti-corrosion coating for inner cavity of ball valve according to claim 2, characterized in that: The positioning mechanism (43) comprises a mounting sleeve (432) fixedly connected to the interior of the positioning seat (41); a fixed shaft (433) is rotatably connected to the interior of the mounting sleeve (432); and a positioning wheel (431) is fixedly connected to the exterior of the fixed shaft (433).

7. The device for producing anti-corrosion coating for inner cavity of ball valve according to claim 3, characterized in that: The driving mechanism (44) comprises a second mounting sleeve (442) fixedly connected to the interior of the positioning seat (41); a second fixed shaft (443) is rotatably connected to the interior of the second mounting sleeve (442); a driving wheel (441) is fixedly connected to the exterior of the second fixed shaft (443); and both the second fixed shaft (443) and the driving wheel (441) are slidably connected to the exterior of the driving shaft (231).

8. A process for producing an anti-corrosion coating for the inner cavity of a ball valve, the process being based on a device for producing an anti-corrosion coating for the inner cavity of a ball valve according to any one of claims 1 to 7, characterized in that: The following steps are involved: Step 1: Start the conveyor belt (33) to convey the ball valve to be processed to the working area; Step 2: Start the drive assembly (2), the second motor (26) drives the bidirectional screw (25) to rotate in the support seat (21), and the movable block (24) slides linearly in the limit seat (22) through the screw pair transmission, driving the positioning seat (41) to move; Step 3: The positioning seat (41) moves to drive the driving mechanism (44) to move, and the ball valve is lifted up through the driving wheel (441), so that it moves upward and is clamped by the positioning wheels (431) and the driving wheels (441) at both ends; Step 4: The positioning seat (41) moves to drive the movable rod (471) to slide and compress the spring (472), and the spray seat (45) and the detection seat (46) slide in opposite directions and open through the push rod (474), so that the spray head and the detection head fit into the inner cavity of the ball valve; Step 5: Start the motor 1 (232) to drive the drive shaft (231) to rotate through the coupling, and the drive shaft (231) drives the drive wheel (441) of the drive mechanism (44) to rotate, and cooperates with the positioning wheel (431) of the positioning mechanism (43) to drive the ball valve to rotate around the axis; Step 6: When the ball valve rotates, the spray head of the spray seat (45) sprays the paint, and the detection head of the detection seat (46) detects in real time.

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